Traction-wheel.



No. 734.481. PATENTED JULY 21 1903.vl A. WENBBRG.

TRAGTION WHEEL'. l APPLICATION FILED SEPT. 18. 1902.

N0 MODEL.

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No. 734,481. i

Patented my e1, 190e.

PATENT OFFICEe ALFRED WENBERG, OF JOLIET, ILLINOIS.

TBACTloN-WHEEL.

SEGIFICATION forming part of Letters Patent No. 734,481, dated July 21,1902-3.

Application iiled September 18, 1902. Serial No. 123.819. (No model.)

4in the county of Will and State of Illinois,

have invented certain newand useful Im'- provements in Traction-Wheels,ot' which the following is a specification.

My invention relates to improvements in v traction-wheels adapted foruse in connection with and as the propelling means of motorvehicles orsleighs; and the especial objects of my improvements are to provide atractionwheel having gripping or frictional teeth adapted to contactwith the earth or with snow in a roadway, which teeth may be easilyremoved when worn out or broken and easily replaced by new teeth andwhich may be sharpened when they become dull from long or constant use.

A further object is to so mount or hang the wheel that it will adjustitself to uneven places in the road-bed, and thus remain in constantfrictional engagement with the sur face of the road and relieve thesupportingframe of thev jar or vibration which would result from a rigidmounting of the wheel.

A still furtherpurpose of my invention is to construct a traction-tooththat will have a sharp edge and a broad base.

In carrying into effect the above-named objects and others of generalutility and novelty I have designed the traction-wheel and mounting forsame, shown in the accompanying drawings in preferred form Yby thefollowing views.

Figure lis a side elevation of my improved traction-wheel mounted at therear end of a frame. Fig. 2 is a transverse vertical section through myimproved wheel on a scale somewhat larger than Fig. l. Figs. 3 and 4 aredetails of one of the traction-teeth.

Referring to the drawings in detail, A represents a pivoted extension ofthe frame of a vehicle of any desired form and means of connection andoperation. The extension is bifurcated, as at a', to provide a Way forthe Wheel C, which is mounted on an axle b', having bearings invertically-slidable blocks b2. Theseblocks have grooves b3 formed intheir edges, which engage the tongues b4 on the contiguous sides of the'yokes b5, which are bolted to the rear ends of the extension A. Theupper portion of the yokes are vertically bored to receive the rods b,lthe lower ends l of which bear against and are secured to the upperportion of the blocks b2. Mounted on the rods b between the blocks andthe top of the yokes are springsl bl, the tension of which is exertedagainst the blocks, but

-Which yield when' the wheel passes over obon the underside of thefelly. The base portion of the tooth embraced by the felly conforms inshape to the contiguous sides of the fellyand on the remaining sidescurves Out- `wardly, as shown, thus providing a wide base for theexposed or sharpened portion d3 of the teeth. The sides of the teethwhich extend across the felly are preferably formed concave, as at d4,thus retaining a sharp edge longerthan if convex or merely straight. Itwill be noted that this construction gives the tooth a long bearing onthe felly, thus holding it rigidly and preventing it from working loose.'lhe extreme edge of the tooth is preferably slightly rounded, as shown.

Having thus described myinvention, what I claim as new, and desire toobtain by Letters Patent, is-

l. In a tractionwheel,a fellysubstantially 3. In a traction-wheel, aconcave felly having outwardly-flaring sides and perforated at Intestimony whereof I affix my signature the bottom, traction-teeth havingconcave in presence of two Witnesses.

faces extendin tiansveisei of the fell with a base theides ofWhiclycoufornl to ti'e ALFRED WENBERG shape of the felly, and withthreaded exten- Witnesses:

sions fitting the perforations of the felly, sub- I F. BENJAMIN,

stantially as seb forth. JOHN I-IULSIZER.

